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An exercise on Performance prediction of reservoir
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havg=6500ft, Pi=2950psiSo kg/ko Ko
32 9040 12 450 3.2 1060 0.85 1570 0.2 2680 0.022 5085 0.0001 75
P (psia) Z Rs2952 13402600 13402400 13402100 0.842 13401800 0.854 12801500 0.869 11501200 0.888 9851000 0.901 860
700 0.929 662400 0.96 465
Pressure upto Pb Pressure Np=N(Bo-Boi)
2925 02600 1.380262249827472400 2.190280629705682100 3.44594594594594
P<Pb Assumed Np/N NpRp=(N(Bt-Bti)-Np(Bt-RsiBg))/Bg1800 0.035 9659.3675889328
0.04 9815.86297760210.05 10128.85375494070.08 11067.8260869565
1500 0.075 22386.75121424720.09 22946.1305990286
0.1 23319.05018888290.13 24437.8089584458
Pb=2100psia Swi=015 N=100MMSTB,
Bo Bg muo/mug Bt Bo/Bg1.4291.4491.461
1.48 0.0012 34.1 1.48 1233.3331.468 0.001518 38.3 1.55908 967.0619
1.44 0.001853 42.4 1.79207 777.11821.399 0.002365 48.8 2.238575 591.5433
1.36 0.002885 53.6 2.7448 471.40381.287 0.00425 62.5 4.1685 302.82351.202 0.00768 79 7.922 156.5104
Rp Np/N, %1340 01340 1.3802622498271340 2.1902806297061340 3.445945945946
So=(1-Np/N)*Bo/Boi*(1-Swi) Kg/Ko R1=Kg/Ko*(muo/mug)*Gas0.84263610916725 0.0018 1346.669247386 4701.671
0.838270118964311 0.0022 1361.484635694 5402.9690.829538138558432 0.004 1428.15388308 6920.3850.803342197340798 0.02 2020.7694154 13443.08
0.792302309307208 0.03 2138.48392 13044.310.779454163750875 0.04 2467.97856 17135.90.770888733379986 0.05 2797.4732 20687.37
0.74519244226732 0.08 3785.95712 33318.72
Boi=1.429rb/stb Rsi=1340scf/stb
20 30 40 50 60 70 80 900.00005
0.0005
0.005
0.05
0.5
5
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Chart Title
kg/koKo
So
Kg/K
o
0.03 0.04 0.05 0.06 0.07 0.08 0.090
2000
4000
6000
8000
10000
12000
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16000
Np/N vs GColumn G
0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.140
5000
10000
15000
20000
25000
30000
35000
P=1500Column G
0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.140
5000
10000
15000
20000
25000
30000
35000
P=1500Column G
20 30 40 50 60 70 80 900.00005
0.0005
0.005
0.05
0.5
5
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Chart Title
kg/koKo
So
Kg/K
o
0.03 0.04 0.05 0.06 0.07 0.08 0.090
2000
4000
6000
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10000
12000
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Np/N vs GColumn G
